{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?page=15&q=levodopa",
    "query": {
      "q": "levodopa",
      "page": 15
    },
    "page_size": 10
  },
  "pagination": {
    "page": 15,
    "page_size": 10,
    "total_count": 343,
    "total_pages": 35,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=16&q=levodopa&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?page=14&q=levodopa&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T03:27:48.620Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01281475",
      "title": "A Trial of Levodopa in Angelman Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Angelman Syndrome"
      ],
      "interventions": [
        {
          "name": "Levodopa",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wen-Hann Tan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "4 Years to 12 Years"
      },
      "enrollment_count": 67,
      "start_date": "2011-01",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2020-07-15",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 7,
      "location_summary": "San Diego, California • San Francisco, California • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Greenwood",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01281475"
    },
    {
      "nct_id": "NCT01515410",
      "title": "Study in Advanced Parkinson's Disease Patients With Predictable Motor Fluctuations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Parkinson's Disease",
        "Motor Fluctuations"
      ],
      "interventions": [
        {
          "name": "DM-1992",
          "type": "DRUG"
        },
        {
          "name": "Sinemet IR",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Depomed",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 34,
      "start_date": "2012-01",
      "completion_date": "2012-10",
      "has_results": true,
      "last_update_posted_date": "2014-03-10",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 7,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Long Beach, California + 4 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Bingham Farms",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01515410"
    },
    {
      "nct_id": "NCT00789672",
      "title": "Pilot Study to Evaluate Levodopa as Treatment for Residual Amblyopia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Amblyopia"
      ],
      "interventions": [
        {
          "name": "levodopa/carbidopa",
          "type": "DRUG"
        },
        {
          "name": "patching",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Jaeb Center for Health Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "8 Years to 17 Years"
      },
      "enrollment_count": 33,
      "start_date": "2009-01",
      "completion_date": "2009-12",
      "has_results": true,
      "last_update_posted_date": "2016-07-13",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00789672"
    },
    {
      "nct_id": "NCT06772220",
      "title": "Pilot Study of Open Label Homocysteine Management Therapy in Levodopa-treated Parkinson's Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson&Amp;#39;s Disease"
      ],
      "interventions": [
        {
          "name": "Folic Acid 1 MG",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin B6 25 MG",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin B12",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "40 Years to 90 Years"
      },
      "enrollment_count": 150,
      "start_date": "2024-03-05",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-01-13",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06772220"
    },
    {
      "nct_id": "NCT04912115",
      "title": "Randomized, Double-Blind, Active Placebo-Controlled Study of Ketamine to Treat Levodopa-Induced Dyskinesia",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dyskinesias",
        "Movement Disorders",
        "Central Nervous System Diseases",
        "Nervous System Diseases",
        "Neurologic Manifestations"
      ],
      "interventions": [
        {
          "name": "Ketamine",
          "type": "DRUG"
        },
        {
          "name": "Midazolam",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "PharmaTher Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "30 Years to 85 Years"
      },
      "enrollment_count": 30,
      "start_date": "2021-10-05",
      "completion_date": "2024-03-30",
      "has_results": false,
      "last_update_posted_date": "2023-11-18",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 7,
      "location_summary": "Tucson, Arizona • Chula Vista, California • Fountain Valley, California + 3 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04912115"
    },
    {
      "nct_id": "NCT06029686",
      "title": "Vibrotactile Coordinated Reset for Parkinson's Patients of a More Variable Population",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "Stanford Glove",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "35 Years to 100 Years"
      },
      "enrollment_count": 20,
      "start_date": "2025-05",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2024-08-19",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06029686"
    },
    {
      "nct_id": "NCT02453386",
      "title": "Safety and Efficacy Study of Tozadenant to Treat End of Dose Wearing Off in Parkinson's Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Idiopathic Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "tozadenant",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biotie Therapies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "30 Years to 80 Years"
      },
      "enrollment_count": 449,
      "start_date": "2015-07",
      "completion_date": "2018-01-12",
      "has_results": true,
      "last_update_posted_date": "2019-04-03",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 40,
      "location_summary": "Birmingham, Alabama • Sun City, Arizona • Loma Linda, California + 37 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Sun City",
          "state": "Arizona"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oxnard",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02453386"
    },
    {
      "nct_id": "NCT04558112",
      "title": "Improving Therapeutic Learning for PTSD",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "PTSD",
        "Post Traumatic Stress Disorder"
      ],
      "interventions": [
        {
          "name": "L-DOPA",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 50 Years · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2021-02-18",
      "completion_date": "2023-12",
      "has_results": false,
      "last_update_posted_date": "2023-08-30",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 2,
      "location_summary": "Austin, Texas • Madison, Wisconsin",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        },
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04558112"
    },
    {
      "nct_id": "NCT02812394",
      "title": "A Study to Compare Two Dose Strengths of CVT-301 (Levodopa Inhalation Powder) With an Oral Dose of Sinemet® (Carbidopa-levodopa) Tablets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Parkinson Disease"
      ],
      "interventions": [
        {
          "name": "CVT-301 (Dose Level 1)",
          "type": "DRUG"
        },
        {
          "name": "CVT-301 (Dose Level 2)",
          "type": "DRUG"
        },
        {
          "name": "Sinemet®",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Acorda Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "25 Years to 65 Years"
      },
      "enrollment_count": 24,
      "start_date": "2016-06",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-10-26",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02812394"
    },
    {
      "nct_id": "NCT06482268",
      "title": "Transplantation of Human iPS Cell-derived Dopaminergic Progenitors (CT1-DAP001) for Parkinson's Disease (Phase I/II)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "PD - Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "Human induced pluripotent stem cell-derived dopaminergic progenitors (CT1-DAP001)",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "40 Years to 75 Years"
      },
      "enrollment_count": 7,
      "start_date": "2024-06-01",
      "completion_date": "2028-05",
      "has_results": false,
      "last_update_posted_date": "2026-08-17",
      "last_synced_at": "2026-10-14T03:27:48.620Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06482268"
    }
  ]
}